Good afternoon to you Nita. Another way of looking at the differences between a page and a post are that pages are evergreen and posts are not.
In other words, a page that you write will be true and hold value for ages on your site. The seasons of the year or what political party is in control of the White House is irrelevant because a page will last for eternity and never change. A post, however, is not always true or may only be true for a little while, hence the reason you write and add posts at least once a week versus a page only every now and then.
Good question, I hope this helps in clarifying the differences.
Ken

Hi Nita,
A page is part of the main structure of your website. You can add things to your page but it will always remain a part of your site. A post is an article you write or add to support your website content or pages. You will constantly add new posts to your site.
Jerome

There is not much difference.
Generally, a post would be added to your blog roll, where a page is the basic structure of your site and probably in your menu.
This should explain more: The Differences Between Posts & Pages

That is basically true. Thanks for your feedback. On my part. I have one post uploaded and then I felt that that post is a good content - a kind of timeless (STATIC) - so I decided that particular post should also be highlighted as a page as well so that my readers can find it more easily. That's the reason I said "some post if it is relevant" could be on both post and page.

Another thing is,
Creating Posts is what's going to rank your website within search engines, not so much the pages.
Using separate keywords for each post title you create depending what you want to rank for.